A few years ago, the "Thick cut of bacon" and other kinds of meat with a fat edge were the most popular meat in Holland. But in these days popularity decreases because researchers says fat is bad for your blood and your blood vessels and can cause a heart attack. It looks simple, eat less meat with a fat edge and eat lean meat. But it often is a fact that lean meat is less healthy than fat meat.  A pig or a cow normally do not grow lean meat  They have to do artificial interventions to make that possible.  
A way to let animals produce more meat is to give growth hormones. But these are often prohibited because of their harmful effects on animals and people. But still in many countries in Europe they use clenbuterol as an anti caught remedy. When they did a random check in Holland there was clenbuterol in 10% of the Dutch cow livers . For animals the result is a higher heartbeat rate and it causes stress. For the consumer the result is even worse. It causes a higher heartbeat rate, dizziness, muscular tremble and muscular pains or headaches. In the same check they found anabolic, a grow hormone, in 1% of the steaks . Some sport mans sometimes use this because of muscle growth, but it's not good for the health. Several sport mans had to go to the hospital because of the anabolic or they suffer from unreasonableness or aggression. Some researchers who studied children who eat meat every day, observed the same. Some farmers use hormone cocktails so they have a lower chance to get caught because of using prohibited hormones. In that way you can find less remains in the meat, besides most of the farmers stop treatment a long time before the animal is sold. In that way the hormones are already absorbed by the meat  
  
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